CN103855890A - Outer rotor type driving motor of main coolant pump - Google Patents
Outer rotor type driving motor of main coolant pump Download PDFInfo
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- CN103855890A CN103855890A CN201210517454.7A CN201210517454A CN103855890A CN 103855890 A CN103855890 A CN 103855890A CN 201210517454 A CN201210517454 A CN 201210517454A CN 103855890 A CN103855890 A CN 103855890A
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- coolant pump
- main coolant
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Abstract
The invention belongs to the technical field of loop systems of a nuclear power plant 1 and particularly relates to an outer rotor type driving motor of a main coolant pump. The outer rotor type driving motor comprises a motor casing, a stator shaft, a stator core, a stator coil, a rotor core and cage, a rotor and a rotor shaft, wherein the rotor core and cage surrounds a stator, is fixed on the inner surface of the rotor, and rotates around the stator synchronous with the rotor. The outer rotor type driving motor of the main coolant pump solves the technical problems that the rotation inertia of the rotors in the loop systems of the nuclear power plant 1 is small and the requirement for idling time after outage of a nuclear reactor happens cannot be met, idling time of the main coolant pump of the nuclear reactor is prolonged, and shut-down security factors of the nuclear reactor are greatly increased.
Description
Technical field
The invention belongs to nuclear power station 1 circuit system technical field, be specifically related to a kind of external-rotor-type main coolant pump drive motors.
Background technology
Reactor main coolant pump is the key equipment of PWR nuclear power plant, is bearing function from cooling agent to reactor that inject, is determining the fail safe of nuclear power plant.The advanced pressurized water reactor AP1000 of U.S.'s Westinghouse Electrical Corp. is the generation Ⅲ nuclear power technology of China's import, digestion and absorption, has higher security performance.The design of AP1000 main pump adopts all-sealed canned pump, and impeller and rotor are connected, and are contained in same seal casinghousing, have eliminated the possibility of refrigerant leaks, and requires freedom from repairs in the phase in longevity, and fail safe is improved a lot.
In main pump design, in order to consider under the emergency rating that loses all power, by the running down of rotor, rely on natural circulation further to take away the heat of reactor core, realization is emergent cooling to reactor core, just need to increase the moment of inertia of main pump, the coasting time of Extending Rotor.
In existing nuclear power station 1 circuit system, main coolant pump driving pump adopts rotor in interior, stator conventional asynchronous machine method for designing outside, there is the technical problem that rotor rotator inertia is little, can not meet idling time requirement after nuclear reactor power-off, need additional large-scale flywheel energy storage to meet the demands.
Once nuclear reactor power-off, reactor shutdown at once, the generation but reactor also has surplus heat, at this moment must maintain reactor coolant flow regime to take after-heat out of.So reactor main coolant pump must possess sufficiently long idling time.
Summary of the invention
The technical issues that need to address of the present invention are: in existing nuclear power station 1 circuit system, rotor rotator inertia is little, can not meet the technical requirement of idling time requirement after nuclear reactor power-off.
Technical scheme of the present invention is:
A kind of external-rotor-type main coolant pump drive motors, comprise motor casing, stator axis, stator core, stator coil, rotor core and mouse cage, rotor and armature spindle, stator axis, stator core, stator coil, rotor core and mouse cage, rotor and armature spindle are arranged on motor casing inside; Stator comprises stator core and stator coil; Stator is fixed in stator axis; Rotor core and mouse cage are enclosed in stator outside, and are fixed on rotor inner surface, can be with rotor synchronous around stator rotation; Rotor top is provided with the armature spindle that runs through motor casing upper surface, and drive motors is by armature spindle power output.
As preferred version,
Described stator axis lower end is fixed on described motor casing lower surface, and upper end is connected to rotor upper end.
Described stator axis lower end can be fixed on described motor casing lower surface by bolt and key, and upper end can be connected to rotor upper end by bearing.
Stator core is fixed in stator axis; Stator coil is enclosed in stator core outside.
Described stator coil is preferably three-phase coil.
The beneficial effect that the present invention obtains is:
(1) external-rotor-type main coolant pump drive motors of the present invention adopts external rotor technology, be that stator is in interior, rotor asynchronous machine method for designing outside, significantly increase rotor moment of inertia by increasing rotor radius, make the motor of same volume weight increase rotor storage power, extend reactor main coolant pump idling time, meet reactor shutdown designing requirement, significantly improve reactor shutdown coefficient of safety;
(2) external-rotor-type main coolant pump drive motors of the present invention can be simplified reactor main coolant pump project organization, reduces and flies to design, and reduces the installation of reactor main coolant pump, debugging difficulty, improves reactor main coolant pump reliability;
(3) external-rotor-type main coolant pump drive motors of the present invention can, under limited space and quality requirements, store rotation function to greatest extent, improves reactor safety.
Accompanying drawing explanation
Fig. 1 is external-rotor-type main coolant pump drive motors structural representation of the present invention.
In figure, 1-motor casing, 2-rotor, 3-rotor core and mouse cage, 4-stator core, 5-stator coil, 6-stator axis, 7-armature spindle.
Concrete real-time mode
Below in conjunction with drawings and Examples, external-rotor-type main coolant pump drive motors of the present invention is elaborated.
The external-rotor-type main coolant pump drive motors of the present embodiment comprises: motor casing 1, stator axis 6, stator core 4, stator coil 5, rotor core and mouse cage 3, rotor 2 and armature spindle 7, stator axis 6, stator core 4, stator coil 5, rotor core and mouse cage 3, rotor 2 and armature spindle 7 are arranged on motor casing 1 inside.
Wherein, described stator axis 6 lower ends are fixed on described motor casing 1 lower surface by bolt and key, and upper end is connected to rotor 2 upper ends by bearing.
Stator comprises stator core 4 and stator coil 5: stator core 4 is fixed in stator axis 6; Stator coil 5 is three-phase coil, is enclosed in stator core 4 outsides.
Rotor core and mouse cage 3 are enclosed in stator outside, and are fixed on rotor 2 inner surfaces, can synchronize around stator rotation with rotor 2.
Rotor 2 is enclosed in rotor core and mouse cage 3 outsides, and its top is provided with the armature spindle 7 that runs through motor casing 1 upper surface, and drive motors is by armature spindle 7 power outputs.
When external-rotor-type main coolant pump drive motors work of the present invention, three-phase current forms rotating magnetic field by stator coil 5 at stator core 4; Rotor core and mouse cage 3 produce induced current, drive rotor 2 to rotate, and its principle is squirrel-cage threephase asynchronous machine drive principle.
Claims (5)
1. an external-rotor-type main coolant pump drive motors, comprise motor casing (1), stator axis (6), stator core (4), stator coil (5), rotor core and mouse cage (3), rotor (2) and armature spindle (7), stator axis (6), stator core (4), stator coil (5), rotor core and mouse cage (3), rotor (2) and armature spindle (7) are arranged on motor casing (1) inside; Stator comprises stator core (4) and stator coil (5); Stator is fixed in stator axis (6);
It is characterized in that: rotor core and mouse cage (3) are enclosed in stator outside, and are fixed on rotor (2) inner surface, can synchronize around stator rotation with rotor (2); Rotor (2) top is provided with the armature spindle (7) that runs through motor casing (1) upper surface, and drive motors is by armature spindle (7) power output.
2. external-rotor-type main coolant pump drive motors according to claim 1, is characterized in that: described stator axis (6) lower end is fixed on described motor casing (1) lower surface, and upper end is connected to rotor (2) upper end.
3. external-rotor-type main coolant pump drive motors according to claim 2, it is characterized in that: described stator axis (6) lower end is fixed on described motor casing (1) lower surface by bolt and key, upper end is connected to rotor (2) upper end by bearing.
4. external-rotor-type main coolant pump drive motors according to claim 1 and 2, is characterized in that: stator core (4) is fixed in stator axis (6); Stator coil (5) is enclosed in stator core (4) outside.
5. external-rotor-type main coolant pump drive motors according to claim 4, is characterized in that: described stator coil (5) is three-phase coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517454.7A CN103855890A (en) | 2012-12-03 | 2012-12-03 | Outer rotor type driving motor of main coolant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517454.7A CN103855890A (en) | 2012-12-03 | 2012-12-03 | Outer rotor type driving motor of main coolant pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103855890A true CN103855890A (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210517454.7A Pending CN103855890A (en) | 2012-12-03 | 2012-12-03 | Outer rotor type driving motor of main coolant pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103855890A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714927A (en) * | 2019-10-08 | 2020-01-21 | 中国船舶重工集团公司第七一九研究所 | Shaftless shield pump with idling function suitable for small marine reactor |
| CN110752689A (en) * | 2019-11-28 | 2020-02-04 | 北京空天高科技有限公司 | Radiating fin type outer rotor motor and stratospheric airship |
| CN110752712A (en) * | 2019-11-28 | 2020-02-04 | 北京空天高科技有限公司 | External rotor motor with fan for heat dissipation and stratospheric airship |
| CN110797129A (en) * | 2019-11-20 | 2020-02-14 | 三门核电有限公司 | Idling test method for shielded main pump of nuclear power plant |
| CN111404312A (en) * | 2020-05-06 | 2020-07-10 | 佛山科学技术学院 | Brushless DC motor for integrated household electrical appliance |
| CN111812510A (en) * | 2020-06-30 | 2020-10-23 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method for testing output load of rim-driven shielding motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1141883A (en) * | 1997-07-18 | 1999-02-12 | Mitsubishi Electric Corp | Outer rotor squirrel-cage induction motor |
| CN202172317U (en) * | 2011-07-29 | 2012-03-21 | 叶羽经 | Liquid-cooled external rotor motor |
| CN202395571U (en) * | 2011-12-06 | 2012-08-22 | 佛山市南海区东唐电机厂 | Outer-rotor direct-current brushless motor |
-
2012
- 2012-12-03 CN CN201210517454.7A patent/CN103855890A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1141883A (en) * | 1997-07-18 | 1999-02-12 | Mitsubishi Electric Corp | Outer rotor squirrel-cage induction motor |
| CN202172317U (en) * | 2011-07-29 | 2012-03-21 | 叶羽经 | Liquid-cooled external rotor motor |
| CN202395571U (en) * | 2011-12-06 | 2012-08-22 | 佛山市南海区东唐电机厂 | Outer-rotor direct-current brushless motor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714927A (en) * | 2019-10-08 | 2020-01-21 | 中国船舶重工集团公司第七一九研究所 | Shaftless shield pump with idling function suitable for small marine reactor |
| CN110797129A (en) * | 2019-11-20 | 2020-02-14 | 三门核电有限公司 | Idling test method for shielded main pump of nuclear power plant |
| CN110797129B (en) * | 2019-11-20 | 2021-06-11 | 三门核电有限公司 | Idling test method for shielded main pump of nuclear power plant |
| CN110752689A (en) * | 2019-11-28 | 2020-02-04 | 北京空天高科技有限公司 | Radiating fin type outer rotor motor and stratospheric airship |
| CN110752712A (en) * | 2019-11-28 | 2020-02-04 | 北京空天高科技有限公司 | External rotor motor with fan for heat dissipation and stratospheric airship |
| CN111404312A (en) * | 2020-05-06 | 2020-07-10 | 佛山科学技术学院 | Brushless DC motor for integrated household electrical appliance |
| CN111404312B (en) * | 2020-05-06 | 2021-09-07 | 佛山科学技术学院 | Brushless DC motor for integrated household electrical appliance |
| CN111812510A (en) * | 2020-06-30 | 2020-10-23 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method for testing output load of rim-driven shielding motor |
| CN111812510B (en) * | 2020-06-30 | 2022-05-17 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method for testing output load of rim-driven shielding motor |
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Application publication date: 20140611 |
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| RJ01 | Rejection of invention patent application after publication |